Arcuate measuring device, and methods of constructing and utiliz

Details Arcuate measuring device, and methods of constructing and utiliz Arcuate measuring device, and methods of constructing and utiliz

1990-07-16

1992-03-03

Will, Thomas B.

Geometrical instruments

Straightedge type

Rules

33509, 33510, B43L 1320

Patent

active

050920545

ABSTRACT:
An arcuate measuring device for measuring distances along a spherical body such as a bowling ball. The device includes a curved guide member including measurement marking thereon. A measurement device is slidably retained on the guide member. Removable pins are provided to permit measuring between two finger holes in a bowling ball. An aperture is provided in the measurement device to permit marking a distance on the ball.

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patent: 3429049 (1969-02-01), Snoddy
patent: 3798780 (1974-03-01), Forle et al.
patent: 4257165 (1981-03-01), Ellison

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